GORILLA 219 
The type skull of this form is broader and shorter than G. 
BERINGERI with a smaller braincase, but much broader face and shorter 
rostrum; the flat expansions at sides and back of braincase are very - 
wide and the posterior outline is rounded, curving inward in center; 
two broad ridges from outer edge of orbits meet at about fronto- 
parietal suture and may develop into a sagittal crest, but this is broken 
away ; palate much shorter and narrower than G. BERING=ERI and teeth 
smaller. Since the description of the skull was published, Hon. Walter 
Rothschild received a skin of this form, of which the following is a 
description : 
Color. Head black, forehead with a few brown hairs; arms and 
shoulders black ; back, chest, nape, belly and legs below knees in front 
black; beard on chin and on sides of face long, black; middle of back 
grayish white; lower part of back, rump and outer sides of thighs 
iron gray grading into black towards ankles; hands and feet black; 
inner side of legs black; top of head black speckled with red. 
Measurements. ‘Total length, 320; occipito-nasal length, 266; 
Hensel, 185; zygomatic width, 178; intertemporal width, 75; extreme 
width of orbits, 114; height of orbit, 43; width of orbit, 45; median 
length of nasals, 41 ; width of rostrum at canines, 64; length of braincase 
from orbital ridge to occiput, 180; greatest breadth of braincase, 104; 
palatal length, 102 ; postpalatal length, 185 ; width of palate at pm!. 37; 
length of upper molar series, 59; length of m?. 13; width of m!. 13. 
Ex type Berlin Museum. 
GORILLA GORILLA JACOBI (Matschie). 
Gorilla jacobi Matsch., Sitzungsb. Gesell. Naturf. Freunde, Berlin, 
1905, p. 279; Rothsch., Proc. Zool. Soc. Lond., 1906, p. 465. 
Type locality. Lobo-Mundung, South Cameroon, West Africa. 
Type in Berlin Museum. 
A very large, long and comparatively narrow skull, with large 
crest and wide lateral expansions around the braincase; face very 
broad with low straight brow; rostrum short, narrow; the orbital 
ridges being about on a line with the braincase; crest beginning on 
posterior portion of frontal and extending to occiput where it meets 
the lateral expansions and causes the occipital outline to terminate 
in a point ; zygomatic arch broad and heavy ; palate broad and rounded. 
This is a massive low-browed, wide, but short-faced skull with a high 
crest and broad lateral expansion around braincase, with occipital 
outline pointed. The short, rather narrow rostrum is characteristic 
of this form. 
